/* Software License Agreement
 * 
 *     Copyright(C) 1994-2019 David Lindauer, (LADSoft)
 * 
 *     This file is part of the Orange C Compiler package.
 * 
 *     The Orange C Compiler package is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 * 
 *     The Orange C Compiler package is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 * 
 *     You should have received a copy of the GNU General Public License
 *     along with Orange C.  If not, see <http://www.gnu.org/licenses/>.
 * 
 *     As a special exception, if other files instantiate templates or
 *     use macros or inline functions from this file, or you compile
 *     this file and link it with other works to produce a work based
 *     on this file, this file does not by itself cause the resulting
 *     work to be covered by the GNU General Public License. However
 *     the source code for this file must still be made available in
 *     accordance with section (3) of the GNU General Public License.
 *     
 *     This exception does not invalidate any other reasons why a work
 *     based on this file might be covered by the GNU General Public
 *     License.
 * 
 *     contact information:
 *         email: TouchStone222@runbox.com <David Lindauer>
 * 
 */

#include <stdlib.h>
#include <string.h>

void* _RTL_FUNC aligned_alloc(size_t __align, size_t __size)
{
    // this is brute force and uses too much memory...
    // i don't have time to rewrite the entire allocation algorithm though...
    size_t sz = __align + __size;
    void* t = malloc(sz);
    if (t)
    {
        int ofs = (unsigned)t % __align;
        if (ofs)
        {
            ofs = __align - ofs;
            t = (char*)t + ofs;
            *(unsigned*)((char*)t - sizeof(unsigned)) = -ofs;  /// stuff in a negative value into what would normally
                                                               // be the size field, to signify this
                                                               // was aligned to free()
        }
    }
    return t;
}